portion, part, duty
份 centers on a share or allotment: a portion of something, a part one is responsible for, or a duty assigned to someone.
份 combines 亻 (person) with 分 (divide, part), suggesting a person's share or allotted portion. The character likely developed as a way to express a personal allotment or duty.
A person 亻 beside a division 分: imagine someone dividing a task or resource and receiving their own portion or duty.
For ヒン, picture a person receiving their portion in a bin: bin -> ヒン, and the person 亻 gets their share from the divided 分 pile.